systemd notification implementation was prone to shell escaping issues.
GitHub issue: rabbitmq-server#1187
It wasn't possible to configure
delegate_count via new style config file.
GitHub issue: rabbitmq-server#1497
rabbitmq-plugins set failed when was used in offline mode (with
GitHub issue: rabbitmq-cli#241
rabbitmqctl list_* command streaming now can be restricted to a set of client TCP ports used to contact RabbitMQ nodes.
GitHub issue: rabbitmq-cli#237